On-chip visible light communication-band metasurface modulators with niobium plasmonic nano-antenna arrays

Abstract

We introduce chip-integrated visible light communication-band modulators based on niobium (Nb) metallic plasmonic nano-antenna arrays. Our plasmonic nano-devices provide strong sensitivity to the polarization of the incident visible light and the geometrical parameters of their subwavelength nanoscale building blocks. Moreover, they offer optical modulation properties with modulation depth MD = 60% at resonant wavelength lambda= 716 nm, at room temperature. By engineering the photo response of the Nb nano-device arrays, we observe a maximum extinction A(lambda)= 1- R(lambda}) = 95 % at resonant wavelength λ= 650 nm. Our results suggest that the integrated Nb nano-antenna array devices can be considered as suitable platforms for the realisation of chip-scale optoelectronic devices interfacing cryogenics quantum circuits, and fibre-based communication systems, for applications in quantum computing, quantum communication, and quantum processing.

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References in corpus (4)

• Magnetic metamaterials at telecommunication and visible frequencies
• Niobium diselenide superconducting photodetectors
• Millimeter wave to terahertz compact and low-loss superconducting plasmonic waveguides for cryogenic integrated nano-photonics
• Light-matter interactions in chip-integrated niobium nano-circuit arrays at optical fibre communication frequencies